Permeating Mass snowballs for quite a while, especially if more than one player is focusing on a combat strategy to play the game
First of all, it can exile a creature of 3 or more power, which is a great default setting to use to blow stuff up nice and easily
Thantis the Warweaver, Basandra, Battle Seraph, and Fumiko, the Lowblood perform similar feats, only at a larger scale
Additionally, whenever your creature dies, drain 1 life
NulldrifterNulldrifter - 46,201 decks It's not the first of its name (yet), but the wordplay comes thick and fast with NulldrifterNulldrifter, who answers the question possibly only Wizards of the Coast card designers could ask: What happens when an Eldrazi and a beloved evoke card have a baby